:root { color-scheme: light; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; color: #203a36; background: #f5f6f3; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #236356; text-underline-offset: 4px; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #639b8d; outline-offset: 4px; }
[hidden] { display: none !important; }
.site-header { max-width: 1136px; margin: auto; padding: 26px 32px; display: flex; justify-content: space-between; align-items: center; gap: 16px; border-bottom: 1px solid #dfe5df; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: #203a36; font-size: 17px; font-weight: 650; text-decoration: none; white-space: nowrap; }
.brand-mark { display: block; width: 34px; height: 34px; object-fit: contain; flex-shrink: 0; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a { color: #53685f; font-size: 13px; text-decoration: none; }
.site-header nav a:hover { color: #203a36; }
main { max-width: 1136px; margin: auto; padding: 56px 32px 72px; }
.intro { max-width: 760px; margin-bottom: 38px; }
.eyebrow { color: #5b776a; font-size: 12px; font-weight: 600; letter-spacing: 2px; margin: 0 0 16px; }
h1 { margin: 0 0 21px; font-size: clamp(34px, 5vw, 50px); font-weight: 600; line-height: 1.3; letter-spacing: -1px; }
.lead { font-size: 16px; line-height: 1.9; color: #64736d; margin: 0; }
.release-status { color: #64736d; font-size: 13px; line-height: 1.7; margin-bottom: 16px; }
.release-status.error { color: #a64126; }
.retry-button { color: #236356; background: white; border: 1px solid #cbd6ce; padding: 8px 16px; border-radius: 6px; cursor: pointer; margin: 0 0 16px; }
.host-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.host-card { min-width: 0; padding: 32px; background: #fff; border: 1px solid #dce4dc; border-radius: 14px; display: flex; flex-direction: column; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.host-icon { height: 44px; width: 44px; display: grid; place-items: center; border-radius: 10px; background: #edf4ed; color: #31694e; font-size: 23px; font-weight: 700; }
.powerpoint-card .host-icon { color: #a65034; background: #faf0e8; }
.badge { font-size: 11px; color: #69766e; border: 1px solid #e1e6df; border-radius: 30px; padding: 5px 10px; }
.badge.available { color: #35674f; background: #f2f7ef; border-color: #d9e6d3; }
.host-card h2 { font-size: 24px; font-weight: 600; line-height: 1.4; margin: 22px 0 10px; }
.host-description { color: #68776e; font-size: 14px; line-height: 1.8; margin: 0; min-height: 51px; }
.requirements { display: grid; gap: 12px; margin: 24px 0 28px; padding: 22px 0 0; border-top: 1px solid #edf0eb; font-size: 12px; line-height: 1.8; }
.requirements div { display: grid; grid-template-columns: 72px 1fr; gap: 10px; }
.requirements dt { color: #738074; }
.requirements dd { color: #4d6155; margin: 0; }
.card-actions { margin-top: auto; }
.primary-action { display: block; width: 100%; border: 0; border-radius: 7px; background: #245c50; color: white; padding: 14px 12px; text-align: center; font: inherit; font-size: 14px; font-weight: 600; line-height: 1.5; text-decoration: none; cursor: pointer; }
.primary-action span { margin-left: 8px; }
.powerpoint-card a.primary-action { background: #a8472b; }
a.primary-action:hover { filter: brightness(0.94); }
.primary-action:disabled { color: #6a786c; background: #eef1eb; cursor: not-allowed; }
.availability-note { font-size: 12px; color: #728073; line-height: 1.8; margin: 10px 0 0; min-height: 44px; }
.secondary-link { font-size: 12px; display: inline-block; margin: 10px 0 0; text-decoration: none; }
.secondary-link:hover { text-decoration: underline; }
.good-to-know { margin-top: 44px; border-top: 1px solid #dfe5df; padding-top: 32px; }
.good-to-know h2 { font-size: 18px; font-weight: 600; margin: 0 0 24px; }
.tips-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 38px; }
.tips-grid h3 { font-size: 13px; font-weight: 600; margin: 0 0 10px; }
.tips-grid p, .admin-deployment p { font-size: 13px; line-height: 1.9; color: #68776e; margin: 0; }
.admin-deployment { margin-top: 24px; padding: 18px 20px; background: #ebefe8; border-radius: 8px; }
.admin-deployment summary { font-size: 13px; cursor: pointer; line-height: 1.8; }
.admin-deployment p { margin-top: 14px; }
.admin-links { display: flex; gap: 16px 24px; flex-wrap: wrap; font-size: 13px; margin-top: 16px; }
.installation-guide { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 52px; margin-top: 48px; padding-top: 40px; border-top: 1px solid #dfe5df; scroll-margin-top: 30px; }
.installation-guide h2 { font-size: 25px; font-weight: 600; line-height: 1.5; margin: 0 0 12px; }
.guide-heading > p:last-child { color: #738074; font-size: 12px; line-height: 1.9; margin: 0; max-width: 190px; }
.guide-content > p, .guide-steps p, .guide-detail p { font-size: 13px; line-height: 1.95; color: #596e60; overflow-wrap: anywhere; }
.guide-content > p { margin: 0 0 14px; }
.guide-steps { list-style: none; counter-reset: guide; margin: 0; padding: 0; }
.guide-steps li { counter-increment: guide; position: relative; padding: 0 0 24px 40px; }
.guide-steps li:last-child { padding-bottom: 4px; }
.guide-steps li::before { content: "0" counter(guide); position: absolute; left: 0; top: 2px; color: #729181; font-size: 12px; font-variant-numeric: tabular-nums; }
.guide-steps h3 { font-size: 14px; font-weight: 600; line-height: 1.6; margin: 0 0 6px; }
.guide-steps p { margin: 0; }
.guide-detail { border-top: 1px solid #dfe5df; padding-top: 16px; margin-top: 16px; }
.guide-detail summary { cursor: pointer; font-size: 13px; line-height: 1.8; }
.guide-detail p { margin: 12px 0 0; }
.noscript-note { padding: 16px; color: #8c442e; background: #fff4e7; }
footer { max-width: 1072px; margin: auto; display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid #dfe5df; color: #738074; padding: 24px 0; font-size: 12px; }
@media (max-width: 720px) { .site-header { padding: 20px; } .site-header nav { gap: 16px; } .site-header nav a { font-size: 12px; } main { padding: 36px 20px 45px; } .intro { margin-bottom: 28px; } .host-grid, .tips-grid, .installation-guide { grid-template-columns: 1fr; } .host-card { padding: 25px; } .host-description { min-height: 0; } .lead { font-size: 14px; } .host-card h2 { font-size: 22px; } .availability-note { min-height: 0; } .installation-guide { gap: 26px; margin-top: 36px; padding-top: 28px; } .guide-heading > p:last-child { max-width: none; } .guide-heading .eyebrow { margin-bottom: 8px; } .tips-grid { gap: 24px; } footer { margin: 0 20px; } }
@media (max-width: 380px) { .site-header { padding: 18px 16px; } .brand { font-size: 15px; gap: 8px; } .site-header nav { gap: 12px; } main { padding-right: 16px; padding-left: 16px; } .host-card { padding: 22px; } .host-card h2 { font-size: 20px; } }